... Product Specification :Model No: 697ZZ bearing Size: 7*17*5mm Bearing material: carbon steelProduct Feature:1.Low coefficient of ... of advanced technology production Material Option:1.Bearing Material:carbon steel,chrome,stainless steel,iron,copper,ect.2 ... produce miniature deep groove ball bearing or carbon steel, bearing steel, stainless steel, non-standard bearing and injection molding roller and ...